baber/WOPTO huggingface dataset:
Patent GB-796766-A (GB)
Title: Preparation of phthalonitriles
Inventor: HADLEY DAVID JAMES
Filed: 1955-12-17
Abstract: Isophthalonitrile and terephthalonitrile are prepared by contacting at elevated temperature, in the vapour phase, a mixture of m-xylene, p-xylene, ammonia, and molecular oxygen in the presence of a catalyst consisting of vanadium or molybdenum oxides and separating the isomeric nitriles from the mixture by a system of solvent extraction where one of the nitriles is relatively insoluble in the solvent. The temperature range of the reaction may be between 300 DEG  and 450 DEG  C., the preferred range being 330 DEG  to 420 DEG  C.  The catalyst may be prepared by depositing vanadium oxide on alumina which has been previously heated in air to 1000 DEG  to 1500 DEG  C. for about 20 hours.  The catalyst, which may contain 0.1 to 10 per cent of vanadium oxide, is diluted with an inert material such as pumice to prevent overheating.  The preferred contact time of the reacting vapours on the catalyst is 0.5 to 5 seconds.  The concentration of oxygen in the gas may vary widely, at least 5 per cent is preferred and at least 3 mols. of oxygen per mol. of xylene. The concentration of ammonia may also vary, it is preferred to use about twice the theoretical amount, i.e. 4 mols. per mol. of mixed xylenes.  The concentration of xylenes in the gas is preferably about 1.5 per cent by volume. The preferred ratio of para to meta xylene is 9 : 1 or greater and the extraction of the isomeric products may be done with 50 per cent aqueous acetic acid at 40-120 DEG  C. when the meta isomer almost completely dissolves and the residue is almost entirely the para isomer.  Methanol, ethanol, and isopropanol are also mentioned as being suitable solvents either alone or in solution with water, ethyl acetate, benzene or xylene.  Any mononitrile compound present in the reaction mixture is first removed by extraction with petroleum ether (40/60).  Examples are given (i) using a mixture of 90 per cent p-xylene and 10 per cent m-xylene to give mixed nitriles in the same proportions and then extracting the meta isomer with 50 per cent aqueous acetic acid; (ii) as (i) but extracting the meta isomer with xylene; (iii) as (i) but extracting the meta isomer with methanol.  Specification 796,765 is referred to.
Patent GB-1309684-A (GB)
Title: Apparatus and method for automatically trimming and joining lengths
IPC: B29C53/00
Filed: 1970-07-27
Abstract: 1309684 Seaming E I DU PONT DE NEMOURS & CO 27 July 1970 [20 Oct 1969] 36332/70 Heading B5K [Also in Division B8] A web L1 of thermoplastic sheeting is fed from a braked supply roll 1R carried on a reel stand 1 to a processing apparatus 401 by way of a splicing and trimming device 2, power driven feed rollers 303 provided with a web-braking device 305, and a web accumulator 320. The stand 1 also carries a replacement roll 2R and the leading end of the web L2 from this roll is held by suction on a unit 234 pivotally mounted in the device 2 which also includes a rotatably mounted platen-carrying member 250 and a unit 208 which is rotatably mounted on a pivoted arm 201, the unit 234 carrying an electrically heated severing element and the unit 208 carrying a similar element and a platen. When the running roll is almost exhausted, as detected by a footage counter or roll-radius sensor the following sequence of events is initiated under the control of an electric and pneumatic control system (Fig. 10, not shown) housed in a unit 275: the drive to the rollers 303 is stopped and the brake 305 is applied to the web L1, the apparatus 401 continuing to function with web drawn from the accumulator 320; unit 208 is moved against unit 250 to sever the web L1 and is then retracted carrying by suction the waste end of the web with it (Figs. 9A to 9C, not shown); member 250 is then rotated carrying the cut end of the web L1 so that unit 234 can be urged towards the member 250 to weld webs L1 and L2 together and to trim the join (Fig. 9D to 9F, not shown); member 250 is then rotated again, to bring the join under the platen carried by the unit 208 which when urged against member 250, mechanically shapes the joined edges with heat and pressure to produce a uniform thickness equal to the thickness of the joined lengths (Figs. 9 to 91, not shown). The unit 208 is then retracted and the drive to the web energized so that the feed to apparatus 401 can continue with the web from the new supply roll 2R.
Patent GB-815822-A (GB)
Title: Device for holding a telephone instrument and accessories associated therewith
IPC: A47B19/04
Filed: 1955-12-20
Abstract: 815,822. Writing appliances. WORTON, H. Dec. 18, 1956 [Dec. 20, 1955], No. 36412/55. Class 146(3) [Also in Group XIV] A device for holding a telephone instrument comprises a box-like table 1 having a pocket 2 to receive a telephone directory, the top of the table having recesses 3 to engage the feet of the telephone and a clip 5 to engage a writing pad. A pencil is accommodated in a recess 9 and a back plate 10 enables the device to.be fixed to a wall.
Patent GB-1386360-A (GB)
Title: Control circuits for electric motors
IPC: B60S1/08
Filed: 1972-08-04
Abstract: 1386360 Electric motor control systems ROBERT BOSCH GmbH 4 Aug 1972 [7 Aug 1971] 36473/72 Heading H2J A control circuit for a motor, periodically energized to drive a periodically movable member, includes an astable multivibrator having two transistors, and a switch to energize the motor, the switch being controlled by a solenoid acting as a load for one of the transistors, and having a normally closed contact, used to ensure triggering of multivibrator. As shown, motor M, which drives at least one windscreen wiper 11 and a limit switch 20, is connected across a D.C. supply 15, e.g. a vehicle battery through a control switch 22 when a control relay 21 is energized, the relay 21 forming a load of transistor 31 in an astable multi-vibrator 29. Upon closure of main switch 16 and selection of terminal 34 by operating switch 32, the transistor 31 of multi-vibrator 29 turns on for a time determined by resistor 41 and capacitor 46, and off for an interval dependent upon capacitor 45 and resistor 44 which may be adjustable. Whenever transistor 31 is switched on, relay 21 is energized so that arm 26 of switch 22 contacts terminal 28, to energize motor M from the D.C. supply. As the wiper moves from its parking position A, arm 23 of limit switch 20 moves to terminal 25 so that even when relay 21 is de-energized the motor M remains energized until wiper 11 is back to its parking position, when arm 23 returns to the position shown. The cycle is repeated when transistor 31 switches on again, to give intermittent excitation of the motor. To ensure an initial pulse from multivibrator 29 when terminal 34 is selected by switch 32, capacitor 46 charges upon closure of main switch 16 via contact 50 of relay 21 and lead 49 connected to the base of transistor 30. Operating switch 32 may be moved to position 35 whereupon motor M is continuously energized, In an alternative, Fig. 2 (not shown), the lead 49 is connected to the collector of transistor 30.
Patent GB-1535336-A (GB)
Title: Concentrating aqueous solutions
IPC: B01D7/00
Filed: 1975-09-05
Abstract: An aqueous solution is contacted with a hydrate-forming fluid at a temperature beneath the maximum temperature at which the hydrate-forming fluid forms a solid hydrate in the presence of the solution, and at a temperature at which the amount of dissolved material which is present in the original aqueous solution exceeds the solubility of the dissolved material in any solution remaining after the hydrate formation. In this case, a magma is formed from solid hydrate, solid dissolved material, any unreacted hydrate-former still present and any unreacted aqueous solution still present. Thereupon, there are separated:   1) the hydrate-former and at least a part of the aqueous constitutents of the solid hydrate and 2) at least a part of the dissolved material, producing an essentially hydrate-former-free product and any residual water still present.   The separation is carried out by fractional sublimation and/or evaporation and/or elution.
Patent GB-1037006-A (GB)
Title: Single stage centrifugal compressor refrigeration system
IPC: F25B1/053
Filed: 1964-09-08
Abstract: 1,037,006. Centrifugal compressors. WORTHINGTON CORPORATION. Sept. 8, 1964 [Dec. 12, 1963], No. 36716/64. Heading F1C. [Also in Division F4] A single stage centrifugal refrigerant compressor is provided with means for introducing relatively cool refrigerant vapour into the hot compressed refrigerant at a point intermediate the compressor suction and discharge sides. As shown, the compressor housing is formed with a chamber 48 which receives refrigerant vapour through an inlet 49, openings 47 being provided in the shrouded impeller 48<SP>1</SP> so that the vapour is drawn from chamber 48 and caused to mix with the rotating compressed gas stream prior to discharge from the impeller tip. The openings 47 may be provided with vanes (Fig. 6, not shown) and may be located in the rear face of the impeller (Fig. 7, not shown). In a further modification, the refrigerant vapour is introduced through inclined passages into the compressed refrigerant after the latter has been discharged from the impeller tip (Figs. 4 and 8, not shown).
Patent GB-1481935-A (GB)
Title: Method of dissolving positive photoresist
IPC: G03F7/42
Filed: 1975-09-05
Abstract: 1481935 Developing and stripping positive photo-resists INTERNATIONAL BUSINESS MACHINES CORP 5 Sept 1975 [3 Oct 1974] 36718/75 Headings G2C and G2X A positive photo-resist comprising a novolak resin e.g. an m-cresol formaldehyde resin sensitized by a 4-substituted diazo-naphthoquinone, is developed and/or stripped with an aqueous solution of phosphoric acid and a permanganate e.g. potassium or ammonium permanganate. The exposed resist is baked prior to or after development at between 130 and 210C. The resist is treated with the solution at room temperature.
Patent GB-817070-A (GB)
Title: Rotary pumps of the flexible tube type
IPC: F04B43/12
Filed: 1957-11-25
Abstract: 817,070. Rotary pumps. TECHNICON INTERNATIONAL Ltd. Nov. 25, 1957 [Dec. 13, 1956; Aug. 5, 1957], No. 36733/57. Class 110(2). A multiple pump of the flexible tube type, Fig. 2, comprises a series of tubes T which are mounted as a unit in a platen 14 by members 42 engaging pins 44. The platen is mounted in a base 12 by a universal coupling 28, 30, 32, 34, 36 and is urged into engagement with the compressing mechanism 26 by springs 16. The compressing mechanism consists of a series of rollers mounted between sprocket chains 54 and is pivoted for retraction purposes to a bracket mounted on the base 12, see Figs. 3 and 6 (not shown). The compressing mechanism is held in its operating position by a releasable catch and is driven by the motor M through suitable clutch and reduction gear means, see also Fig. 7 (not shown). Movement of the member 26 into the operating position actuates the starting- switch of the motor. The tubes may be made of vinyl plastic and are of the same wall thickness irrespective of their internal diameters. In a modification, Fig. 11, the compressing mechanism is in the form of a cylindrical carrier 111 having a series of rollers 58<SP>1</SP> and the platen 130 is pivoted at 140 about the frame and is releasably secured thereto by a pin 142, a pressure-relieving portion 146 being provided. Movement of the platen actuates a switch 102<SP>1</SP> to start the motor 104<SP>1</SP> so that the shaft 112 can be brought up to synchronous speed before the platen is fully closed against the tubes T. The rollers are mounted on spring-loaded cylinders 20.
Patent GB-904447-A (GB)
Title: Improvements in or relating to tractors
IPC: B62D9/00
Filed: 1958-11-17
Abstract: 904,447. Side-delivery rakes. PATENT CONCERN N.V. Nov. 17, 1958 [Nov. 25, 1957], No. 36898/58. Class 6(3). [Also in Group XXXI] Side delivery rakes 80, 82, Fig. 9, are provided at both ends of a tractor 7 which may be driven in opposite directions, the rakes being lowered alternately so that the tractor need not be turned,
Patent GB-1532590-A (GB)
Title: Hydroxy-containing dialkyl peroxides and process for the preparation thereof
IPC: C07C409/18
Filed: 1977-09-05
Abstract: 1532590 Peroxy initiators containing hydroxyl groups PENNWALT CORP 5 Sept 1977 [15 Sept 1976] 36973/77 Heading C3P [Also in Division C2] Hydroxy-containing peroxides useful as freeradical generating catalysts for polymerizing vinyl monomers, curing resins and crosslinking polymers have the formula:- wherein R is a monovalent C 4-15  t aliphatic radical, a divalent C 8-30  di-t-aliphatic radical or a trivalent C 10-21  tri-t-aliphatic radical, R 1  is a divalent t-aliphatic or cycloaliphatic radical 3 to 15 carbon atoms, the t-carbon atom of which is attached to the peroxy group, R 3  is a -R 1 -OOR group or a C 1-15  aliphatic or C 3-15  cycloaliphatic radical or a hydrogen atom or R 1  is linked with R 3  to form a trivalent C 3-10  aliphatic radical, n is 1, 2 or 3, or R 3  is a divalent radical as defined for R 1  when n is 2, or R is linked to R 1  to form a C 6-20  trivalent aliphatic radical when n is 1 and R can be linked to R 3  to form a divalent C 3-10  aliphatic radical when n is 1. An example illustrates the curing of an unsaturated polyester-styrene resin with 3,5,5-trimethyl-3(dibutylperoxy)cyclohexanol or 2,6-dimethyl-2,6-bis(t-butyl peroxy) -4-heptanol.
Patent GB-1529189-A (GB)
Title: Photochemical diodes and photo-electrolysis using such diodes
IPC: B01J19/12
Filed: 1977-09-05
Abstract: 1529189 Photoelectrolysis; photolytic decomposition of H 2 O ALLIED CHEMICAL CORP 5 Sept 1977 [30 Sept 1976] 37025/77 Heading C7B Photochemical diodes of either the Schottky Fig. 3 or p-n type Fig. 5B are used in photolytic decomposition by suspending the diodes in a reactant matrix (e.g. H 2 O or H 2 S) and irradiating them with natural sunlight or artificial Xe light. Schottky diodes comprise a semi-conductor layer 34 having an ohmic contact 35 on one face, and a metallic layer 36 over the ohmic contact. In Fig. 5B, a p-type semi-conductor has an ohmic contact at 54, and an n-type has an ohmic contact at 56, the contacts being connected via metal layer 57. The size of the diodes may range from 0À01Ám to >1mm. The diodes may be suspended in an electrolyte 64 flowing through a transparent pipe 62 located at the focus of a solar concentrator 63. Schottky diodes may be constructed from n-GaP/Pt; n-CdS/Pt; CdS/Cd 2 SnO 4 ; and a p-n photochemical diode from n-TiO 2 /p-GaP.
Patent GB-427085-A (GB)
Title: Hair-drying apparatus
IPC: A45D20/06
Filed: 1933-11-23
Abstract: 427,085. Air douches. ROBERTS,. J. H. T., 73, Wentworth Road, Golders Green, London. Nov. 23, 1933, No. 37055/34. Divided out of 425,380. [Class 81 (ii)] Apparatus for hair drying and like purposes comprises a fan for generating an air current and means positioned in said air current adapted for removal, heating, and replacement. A fan 2 driven through suitable gearing by periodic movement of a rackcarrying lever 11 drives a stream of air through the outlet tube 4 which may be of thin steel tube and detachable from the fan casing 1. A tube 16, for example of aluminium, of substantial length and thickness, fits into the tube 4 and is removable for heating over a spirit, gas, or oil burner, or otherwise. A bayonet slot 18 co-operating with a peg within the tube 4, or other suitable locking device is provided. A number of interchangeable heating tubes may be employed. These may have internal and external flutings or projections, or contain spiral vanes or the like to facilitate heat transfer. Each tube has a wire loop 21 serving as a holder and also as a guard or distance piece when the apparatus is in use. The tube 4 may be formed near the end fitting on to the nozzle of the casing 1 with a number of slots to reduce the passage of heat to said casing. The casing nozzle is then tapered and projects beyond the slots. The tube 16 may be supported in a ring or tube of asbestos. The fan may be at either end of the tube containing the heater so that air is drawn or propelled thereover. Thus the heated tube may be positioned so that air is drawn through it, then through inlet openings in the side of the casing 1, and blown out through a tangential tube. In this case a partition separates the fan from the mechanism chamber. The fan may be operated by clockwork which can be wound by periodic movement of the lever 11. Specification 423,590 is referred to.
Patent GB-786034-A (GB)
Title: Improvements in magnetic digital-data storage devices
IPC: G06F7/24
Filed: 1950-06-23
Abstract: 786,034. Sorting digital data. DIRKS, G. June 23, 1950 [Oct. 1, 1948], No. 37215/54. Divided out of 786,021. Drawings to Specification. Class 106 (1). Information storage apparatus comprises a magnetizable tape with information areas arranged lengthwise thereof, means for producing relative movement between the tape and sensing and recording means, control means adapted to be operated by a predetermined signal or signals sensed. from the tape, and means responsive to the control means which renders the sensing and recording means effective to transfer signals synchronously with the relative movement from or to all storage areas of a selected information area when the predetermined signal is sensed. The description is substantially the same as that of Specification 786,031, but the claims differ. Specifications 786,033; 786,037, 786,038, [both in Group XVI], 786,039, 786,041, 786,042 and 37207/54 also are referred to.
Patent GB-970139-A (GB)
Title: Improvements in or relating to removable top closures for walled enclosures
Inventor: KING RONALD ALBERT
IPC: F27D1/18
Filed: 1962-10-02
Abstract: 970,139. Furnace covers. STEIN ATKINSON STORDY Ltd. Sept. 5, 1963 [Oct. 2, 1962], No. 37242/62. Heading F4B. [Also in Divisions B7 and E2] In a cover for a walled enclosure such as a furnace or oven, comprising a number of separate wheeled lid sections 11 which are raised together by the movement of rails 12 extending on either side of the top opening,. and run off in turn on to the platform 15 of a hoist which is lowered to accommodate all the sections, the lid section 11 remote from the hoist has a motor 18 to propel the lid sections away from or towards the hoist platform 15 and, as each section 11 is lowered on the platform 15 it is automatically uncoupled from the following sections, and automatically coupled to the preceding sections as it is raised into position on the platform 15. The coupling between two adjacent lid sections 11 comprises interengaging members 16, 17 extending the full width of each lid section, a depending flange on the member 16 at the hoist end of a section engaging the channel section 17 at the adjacent end of a neighbouring section. Rails 20 on the lid sections and on the hoist platform 15 co-operate with the rails 12 when they are raised on links 22 by rams 24 so that the lid sections 11 can be easily stacked on the platform 15.
Patent GB-909720-A (GB)
Title: Improvements in or relating to ignition and excitation arrangements for single anodemetal-vapour discharge valves
IPC: H01J13/48
Filed: 1959-11-03
Abstract: 909,720. Metal-vapour discharge apparatus. SIEMENS-SCHUCKERTWERKE A.G. Nov. 3, 1959 [Nov. 5, 1958], No. 37279/59. Class 39 (1). In an ignition and excitation arrangement for a single anode discharge tube having an anode 2, grid 3, exciter anode 4, liquid cathode 5 and ignition rod 6, an ignition current impulse is generated when the excitation arc is broken, e.g. in the event of an overload, and, as shown, the excitation circuit includes the primary 31 of a transformer whose secondary 32 feeds the ignition circuit. There is connected in parallel with the excitation circuit a normally closed contact 35a of a relay 35 which pulls up slowly, due to an R.C. element 36, 37 at the closing of the contact 33a. The normally open contact 33a of relay 33 is closed when a current flows in the transformer primary 31. If the exciting current fails, a high voltage is generated in the transformer secondary 32 to cause a current surge to pass through the ignition rod 6.
Patent GB-1284317-A (GB)
Title: Turntables for toy or model track layouts
Inventor: ERNST MAX
IPC: A63H19/34
Filed: 1970-08-03
Abstract: 1284317 Model railway turntable M ERNST 3 Aug 1970 [8 Aug 1969] 37359/70 Heading A6S In a toy turntable having a bridge 4 driven through an electric motor 22, a clutch and reduction gearing 43-50, and a toothed wheel 42 engaging a toothed rim 3 of the 'turntable base 1, a projection 66 on a spring-loaded switch lever 67 engages a notched cam 64 on the toothed wheels shaft 41 and an arm 73 on the lever 67 is engageable with a motor switch 74 so as to (a) maintain an electric current to the motor when rotation is initiated until (b) the projection 66 engages a notch 65 of the cam, when it switches off the motor. The spacing between notches corresponds to the angular spacing of railway sidings, e.g. 18, Fig. 3, around the turntable's rim. A further arm 75 on the lever 67 is engageable with a contact arm 76 to give a signal to an indicating device. The clutch comprises a worm wheel 49 on a lever 53, 54 normally spring biassed out of engagement with a worm 50 on the motor shaft: on switching on the motor, a centrifugal weight device urges a pin 63 against the lever to urge the worm and worm wheel into engagement. The bridge 4 carries wheels 10 rotatable on a rail 2 of the base 1.
Patent GB-892052-A (GB)
Title: Improvements in or relating to coat and the like hangers
Inventor: CARROLL JOSEPH ROY
IPC: A47G25/16
Filed: 1957-12-03
Abstract: 892,052. Coat &c. hangers; cabinets. CALTHENA Ltd. Dec. 2, 1958 [Dec. 3, 1957], No. 37553/57. Classes 52(1) and 52(5) A coat &c. hanger comprises a yoke 19 provided with a trouser bar 20 and a frame 23 dedepending from the bar 20 and providing a bar 21 to support the lower portion of a full length garment, such as an overcoat or dressing gown, so that the garment can be hung in the reduced hanging space 16 of a bedside locker. The locker is divided into three compartments a partition 12 separating the hanging space and a horizontal partition separating a shelved part accessible through a door 13 and an upper compartment accessible through sliding doors 14.
Patent GB-1085184-A (GB)
Title: Process and apparatus for spinning fibrous materials
Inventor: SHISEEV MIKHAIL DMITRIVICH
IPC: D01H4/12
Filed: 1965-09-03
Abstract: 1,085,184. Break-spinning apparatus. EXPERIMENTALNY NAUCHNO-ISSLEDOVATELSKY INSTITUT METALLOREZHUSCHIKH STANKOV. Sept. 3, 1965, No. 37829/65. Heading D1D. [Also in Division F2] Apparatus for spindleless pneumatic spinning, comprises a rotary head, e.g. a spinning- cup 2, carried by a rotatable sleeve supported in a fixed shaft 3 by air-bearings. Attached to one end of the sleeve is an end bearing 8 and at the other an end of the sleeve is an end-bearing 7 attached to a fixed part. The shaft is bored axially or grooved on its surface for connexion to a source of compressed air, and ducts lead from the bore to the inside of the sleeve and the end bearings. In other forms, the sleeve is arranged vertically and is connected to the rotor of an electric motor of which the stator is connected to a fixed housing. The tendency of the cup and sleeve to rise under the influence of reduced pressure generated inside the cup is offset by the weight of the rotor. In all forms, graphite is placed between the sleeve and shaft.